code: def test_raises_on_empty_geojson(self):
      geo = {}
      with self.assertRaises(InvalidGeoJson):
          geojson_layer(geo)
  
file_path: gmaps/gmaps/tests/test_geojson_layer.py
imports: import unittest
  from ..None import geojson_layer, InvalidGeoJson, GeoJsonFeature
label_desc: Use image node_id 2 for calling the GeoJson obj's underlying member method code with example usage: obj.test_raises_on_empty_geojson() without return types